US20190130682A1 - Control system and method for a vehicle - Google Patents

Control system and method for a vehicle Download PDF

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Publication number
US20190130682A1
US20190130682A1 US16/096,334 US201616096334A US2019130682A1 US 20190130682 A1 US20190130682 A1 US 20190130682A1 US 201616096334 A US201616096334 A US 201616096334A US 2019130682 A1 US2019130682 A1 US 2019130682A1
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United States
Prior art keywords
vehicle
electronic device
personal electronic
antenna
signal intensity
Prior art date
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Abandoned
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US16/096,334
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English (en)
Inventor
Thomas Farges
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Dura Operating LLC
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Dura Operating LLC
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Filing date
Publication date
Application filed by Dura Operating LLC filed Critical Dura Operating LLC
Assigned to DURA AUTOMOTIVE SYSTEMS reassignment DURA AUTOMOTIVE SYSTEMS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FARGES, THOMAS
Assigned to DURA OPERATING, LLC reassignment DURA OPERATING, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DURA AUTOMOTIVE SYSTEMS
Publication of US20190130682A1 publication Critical patent/US20190130682A1/en
Abandoned legal-status Critical Current

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • B60R25/241—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user whereby access privileges are related to the identifiers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G07C2009/00507—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks keyless data carrier having more than one function
    • G07C2009/00547—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks keyless data carrier having more than one function starting ignition
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle

Definitions

  • the disclosure concerns a control system for a vehicle, comprising a central unit configured to actuate several functions of the vehicle, including unlocking, locking and starting the vehicle.
  • the disclosure also concerns a control method for a vehicle.
  • a vehicle comprises at least one door provided with a lock.
  • the driver inserts a key into the lock to unlock the latter, open the door and enter the vehicle.
  • a vehicle can be provided with an electronic lock actuated by an electronic key.
  • WO 2010 115 585 discloses an example of electronic keypad integrated to a trim component of the vehicle.
  • WO 2013 184 316 discloses an example of keyless entry system including a mobile device portable by the driver and an accessory located inside the vehicle.
  • WO 2015 168 459 discloses an example of keyless entry system including a NFC device and a keypad.
  • RX and RSSI Received Signal Strength Indication
  • RSSI Received Signal Strength Indication
  • Both RX and RSSI are indications of the power level being received by an antenna.
  • the difference between RX and RSSI is that RX is measured in milliWatts (mW) or decibel-milliwatts (dBm), whereas RSSI is a signal strength percentage—the higher the RSSI number, the stronger the signal.
  • RSSI is a relative measurement that is mostly defined by each chip manufacturer. There is no standardized relationship of any particular physical parameter to the RSSI reading.
  • a first manufacturer could have an RSSI max value of 100 while a second manufacturer will return RSSI values anywhere from 0 to 127.
  • RSSI max value 100
  • a second manufacturer will return RSSI values anywhere from 0 to 127.
  • only RSSI data is available from the high level API.
  • the variation of a RSSI value can be noticed even on a fixed location or distance.
  • One factor for the variation could be the hardware/radio platforms. For instance, on iOS devices where there aren't many different chipsets, the RSSI value could accurately reflect the relationship to the distance. The RSSI value from a first iPhone probably means the same strength value on a second iPhone. However, on Android devices where we have a large variation of devices and chipsets, the absolute value of RSSI won't help easily map to a location. The same RSSI value on two different Android phones with two different chipsets may mean two different signal strengths. However, the RSSI value could still be very helpful in the proximity applications if used to get the trend of the RSSI value change. That trend could give meaningful data.
  • the aim of the disclosure is to provide an improved control system for a vehicle.
  • the disclosure concerns a control system for a vehicle, comprising: a central unit configured to actuate several functions of the vehicle, including unlocking the vehicle, locking the vehicle and starting the vehicle; an antenna arrangement integrated to the vehicle; a personal electronic device portable by an user of the vehicle; a first multi-directional signal transmitted from the antenna arrangement to the personal electronic device; and a second multi-directional signal transmitted from the personal electronic device to the antenna arrangement, in response to the first multi-directional signal.
  • the second multi-directional signal is processed by the control system to evaluate a position of the personal electronic device outside or inside the vehicle. If the position of the personal electronic device is evaluated outside the vehicle, then unlocking the vehicle is authorized and starting the vehicle is forbidden; whereas if the position of the personal electronic device is evaluated inside the vehicle, then starting the vehicle is authorized.
  • the passive entry function consisting in unlocking the openings of the vehicle, then the passive start function consisting in starting the engine of the vehicle, can be performed in a simple and efficient way.
  • a smart key is considered as specific to the vehicle, while a smartphone is considered as standard.
  • the antenna arrangement defines a signal intensity mapping having various values.
  • the second multi-directional signal has a variable signal intensity, which is calculated then compared to the signal intensity mapping by the control system. If the variable signal intensity is inferior to a signal intensity reference, then the position of the personal electronic device is evaluated outside the vehicle, so that unlocking the vehicle is authorized and starting the vehicle is forbidden; whereas if the variable signal intensity is superior or equal to the signal intensity reference, then the position of the personal electronic device is evaluated inside the vehicle, so that starting the vehicle is authorized.
  • the antenna arrangement comprises different antennas integrated to the vehicle.
  • the signal intensity mapping is defined depending on locations of the antennas.
  • the second multi-directional signal has a distinct variable signal intensity for each of the antennas.
  • the position of the personal electronic device is evaluated by triangulation.
  • control system may incorporate one or several of the following features:
  • the control system only relates to passive functions of locking, unlocking the vehicle and starting the vehicle.
  • the antenna arrangement comprises a main antenna and at least one secondary antenna, and the first multi-directional signal is transmitted to the personal electronic device only by the main antenna.
  • the main antenna emits the first multi-directional signal at a predetermined frequency
  • the control system is configured to activate the at least one secondary antenna for receiving the second multi-directional signal only after the second multi-directional signal has been received by the main antenna.
  • the second multi-directional signal is processed by the antenna arrangement.
  • the second multi-directional signal is received by the antenna arrangement, then processed by the central unit.
  • the personal electronic device is configured to communicate via Bluetooth standard, preferably Bluetooth Low Energy standard.
  • the personal electronic device is configured to communicate via NFC standard.
  • the antenna arrangement is configured to communicate via Bluetooth standard, preferably Bluetooth Low Energy standard.
  • the central unit is configured to communicate via NFC standard.
  • the antenna arrangement comprises a single antenna, which is configured to send the first multi-directional signal and receive the second multi-directional signal.
  • the antenna arrangement comprises different antennas.
  • the antenna arrangement comprises a main antenna configured to send the first multi-directional signal.
  • the antenna arrangement comprises at least one secondary antenna configured to receive the second multi-directional signal.
  • the main antenna is further configured to receive the second multi-directional signal.
  • the main antenna is configured only to send the first multi-directional signal.
  • the secondary antenna is configured only to receive the second multi-directional signal.
  • the signal intensity mapping is defined by giving a different importance to the different antennas.
  • the signal intensity mapping is defined by giving a same importance to the different antennas.
  • the antenna arrangement is mounted in a front compartment of the vehicle.
  • the vehicle is provided with a gearbox control device, and the antenna arrangement includes a antenna integrated to the gearbox control device.
  • the antenna arrangement includes at least one antenna mounted next to an inner face of an outer component of the vehicle, for example a front door.
  • the antenna arrangement includes at least one antenna integrated to a driver door of the vehicle.
  • the invention also concerns a control method for controlling a vehicle, comprising: a central unit configured to actuate several functions of the vehicle, including unlocking the vehicle and starting the vehicle; and an antenna arrangement integrated to the vehicle; a personal electronic device portable by an user of the vehicle.
  • the control method includes the following steps:
  • a personal electronic device is carried near the vehicle by an user of the vehicle;
  • a first multi-directional signal is transmitted from the antenna arrangement to the personal electronic device
  • a second multi-directional signal is transmitted from the personal electronic device to the antenna arrangement, in response to the first multi-directional signal;
  • the at least one multi-directional signal is processed to evaluate a position of the personal electronic device outside or inside the vehicle; then either
  • unlocking the vehicle is authorized and forbidding starting the vehicle is forbidden if the position of the personal electronic device is evaluated outside the vehicle;
  • starting the vehicle is authorized if the position of the personal electronic device is evaluated inside the vehicle.
  • control method comprises the following steps:
  • a variable signal intensity of the second multi-directional signal is calculated then compared to the signal intensity mapping, in order to evaluate a position of the personal electronic device outside or inside the vehicle; then either
  • variable signal intensity is inferior to a signal intensity reference, the position of the personal electronic device being evaluated outside the vehicle;
  • variable signal intensity is superior or equal to the signal intensity reference, the position of the personal electronic device being evaluated inside the vehicle.
  • the antenna arrangement comprises different antennas integrated to the vehicle.
  • the signal intensity mapping is defined depending on locations of the antennas.
  • the second multi-directional signal has a distinct signal intensity for each of the antennas.
  • the position of the personal electronic device is evaluated by triangulation.
  • control method may incorporate one or several of the following features:
  • the antenna arrangement comprises a main antenna and at least one secondary antenna, and the first multi-directional signal is transmitted to the personal electronic device only by the main antenna.
  • the second multi-directional signal is received from the personal electronic device by the main antenna and/or by the at least one secondary antenna.
  • the second multi-directional signal is received from the personal electronic device by the main antenna and by the at least one secondary antenna.
  • the main antenna emits the first multi-directional signal at a predetermined frequency, then the at least one secondary antenna is activated to receive the second multi-directional signal only after the second multi-directional signal has been received by the main antenna.
  • Unlocking the vehicle is automatically performed when the position of the personal electronic device is evaluated in a nearby area outside the vehicle.
  • Locking the vehicle is automatically performed when the position of the personal electronic device is evaluated moving from a nearby area outside the vehicle to a distant area outside the vehicle.
  • Starting the vehicle must be voluntarily performed by the user, for example by pushing a start button, when the position of the personal electronic device is evaluated inside the vehicle.
  • the personal electronic device is initially recognized by the vehicle via NFC communication.
  • the personal electronic device has a Bluetooth identifier transmitted to the vehicle during the NFC communication.
  • the first multi-directional signal is a Bluetooth signal, preferably a Bluetooth Low Energy signal.
  • the second multi-directional signal is a Bluetooth signal, preferably a Bluetooth Low Energy signal.
  • the second multi-directional signal is received and processed by the antenna arrangement.
  • the second multi-directional signal is received by the antenna arrangement, then processed by the central unit.
  • the functions of unlocking the vehicle, locking the vehicle or starting the vehicle are authorized via a Bluetooth communication between the vehicle and the personal electronic device.
  • the vehicle initiates the Bluetooth communication, preferably in a master to slave mode, more preferably with the vehicle as master and the personal electronic device as slave.
  • the Bluetooth communication is established directly between the personal electronic device and the central unit.
  • the Bluetooth communication is established directly between the antenna arrangement and the central unit.
  • the Bluetooth communication is established between the personal electronic device and the antenna arrangement, then a second communication is established between the antenna arrangement and the central unit.
  • FIG. 1 is an upper view of a control system, for a vehicle shown in horizontal section;
  • FIGS. 2 to 4 are views similar to FIG. 1 , illustrating the control method
  • FIGS. 5 to 8 are views similar to FIG. 4 , for control systems according to alternate embodiments of the invention.
  • FIGS. 1 to 4 show a control system 1 , equipping an automotive vehicle 2 .
  • vehicle 2 can have a different configuration without leaving the scope of the invention.
  • a user 3 is represented next to vehicle 2 , only in FIG. 1 for simplification purpose. Generally, user 3 is the driver of vehicle 2 .
  • Vehicle 2 comprises a body structure 4 , delimiting an interior 5 and an exterior 6 of vehicle 2 .
  • Vehicle 2 comprises a front compartment 7 and a rear compartment 8 .
  • vehicle 2 comprises an engine 9 .
  • vehicle 2 In front compartment 7 , vehicle 2 comprises a central unit 10 , a steering wheel 11 and a gearbox control device 12 .
  • Vehicle 2 comprises several openings 40 integrated to body structure 4 and providing access to interior 5 of vehicle 2 . More precisely, vehicle 2 comprises front lateral doors 41 and 42 , rear lateral doors 43 and 44 , and a rear trunk door 45 .
  • Front compartment 7 includes a driver seat 71 and a passenger seat 72 .
  • Rear compartment 8 includes passenger seats 73 and 74 , which can be independent or form a single rear seat depending on configuration of vehicle 2 .
  • Engine 9 may be a combustion engine or any other motorization system, for example an electric motorization or a hybrid motorization.
  • Central unit 10 is configured to actuate various functions of vehicle 2 , including a passive entry function PE consisting in unlocking vehicle 2 , a passive closure function PC consisting in locking the vehicle 2 , and a passive start function PS consisting in starting vehicle 2 . More precisely, the passive entry function PE consists in unlocking openings 40 of vehicle 2 , to provide access to its interior 5 .
  • the passive closure function PC consists in locking openings 40 of vehicle 2 , to prevent access to its interior 5 .
  • the passive start function PS consists in starting engine 9 , so vehicle 2 can move.
  • Central unit 10 includes an onboard computer and various sub-systems associated with the different functions of vehicle 2 .
  • antenna arrangement 20 includes a single antenna 21 mounted inside gearbox control device 12 .
  • Antenna 21 emits a multi-directional signal S 20 , preferably in Bluetooth Low Energy standard.
  • Antenna arrangement 20 is connected to central unit 10 via wired or wireless means.
  • antenna 21 is a sub-system of unit 10 .
  • User 3 holds a personal electronic device 30 , preferably a smartphone.
  • device 30 may be a smart electronic watch, tablet or the like.
  • Device 30 emits a multi-directional signal S 30 , which may be in Bluetooth Low Energy standard.
  • Device 30 can also emit signals via other communication standards, such as LET, Wi-Fi and NFC.
  • Antenna 21 includes receiving and emitting means, so as to be able to emit signal S 20 and receive signal S 30 .
  • device 30 includes receiving and emitting means, so as to be able to emit signal S 30 and receive signal S 20 .
  • antenna 21 processes signal S 30 .
  • central unit 10 processes signal S 30 received by antenna 21 .
  • control system 1 comprises central unit 10 , antenna arrangement 20 , device 30 , signals S 20 and S 30 .
  • signal S 30 is processed by control system 1 to evaluate a position P 30 of device 30 outside or inside vehicle 2 .
  • This processing operation can be continuous or regular, for example every one second.
  • position P 30 of device 30 is evaluated outside vehicle 2 , then the passive entry function PE is authorized and the passive start function PS is forbidden by system 1 .
  • unlocking of openings 40 is authorized, while starting of engine 9 is forbidden.
  • the unlocking of openings 40 is automatically performed when position P 30 of device 30 is evaluated outside vehicle 2 close to body structure 4 , more precisely close to driver door 41 . After unlocking, said openings 40 must be voluntarily open by user 3 . More precisely, the driver door 41 or another entry 42 - 45 of vehicle 2 must be voluntarily open by user 3 .
  • the passive start function PS is authorized. In other words, starting of engine 9 is authorized.
  • starting of engine 9 must be voluntarily performed by user 3 , for example by pushing a start button, when position P 30 of device 30 is evaluated inside vehicle 2 .
  • fuel would be wasted if user 3 doesn't want to move vehicle 2 immediately.
  • control method is based on RSSI (Received Signal Strength Indication).
  • RSSI Received Signal Strength Indication
  • the control method can be based on any other evaluation technique.
  • Antenna arrangement 20 defines a signal intensity mapping M 20 around antenna 21 .
  • Mapping M 20 consists in various signal intensity values distributed in space inside and outside vehicle 3 . Those signal intensity values depend on distance from antenna 21 . The closest from antenna 21 , the strongest is the signal intensity.
  • Signal S 30 between device 30 and antenna arrangement 20 has a variable signal intensity I 30 , which is calculated by control system 1 processing signal S 30 .
  • the variable signal intensity I 30 can be calculated by control unit 10 , or directly by antenna arrangement 20 .
  • mapping M 20 can include signal intensity references I 20 and I 21 having preset intensity values.
  • signal intensity reference I 20 corresponds to a predetermined distance from antenna 21 defining a border B 20
  • signal intensity reference I 21 corresponds to another predetermined distance from antenna 21 defining a border B 21 .
  • Signal intensity reference I 20 is superior to signal intensity reference I 21 , so that distance defining border B 20 is inferior to distance defining border B 21 .
  • antenna arrangement 20 around antenna 21 . More precisely, an inside area A 5 centered on antenna 21 is defined inside vehicle 2 , a nearby area A 6 is defined outside vehicle 2 but near body structure 4 of vehicle 2 , and a distant area A 60 is defined outside vehicle 2 farther than area A 6 .
  • borders B 20 and B 21 define areas A 5 , A 6 and A 60 .
  • Area A 5 is defined closer to antenna 21 than border B 20 .
  • Area A 6 is defined between borders B 20 and B 21 .
  • Area A 60 is defined farther from antenna 21 than border B 21 .
  • variable signal intensity I 30 is inferior to the signal intensity reference I 20 , then position P 30 of the personal electronic device 30 is evaluated inside area A 6 or A 60 , anyway outside area A 5 . Thus, position P 30 of device 30 is evaluated outside vehicle 2 , so that the passive entry function PE is authorized and the passive start function PS is forbidden by system 1 .
  • unlocking of openings 40 is authorized then automatically performed when position P 30 of device 30 is evaluated in nearby area A 6 outside vehicle 2 .
  • variable signal intensity I 30 is superior or equal to the signal intensity reference I 20 , then position P 30 of device 30 is evaluated inside area A 5 . Thus, position P 30 of device 30 is evaluated inside vehicle 2 , so that starting the passive start function PS is authorized by system 1 .
  • variable signal intensity I 30 is superior to the signal intensity reference I 21 , and becomes inferior to this signal intensity reference I 21 , then position P 30 of device 30 is evaluated moving from nearby area A 6 to distant area A 60 outside vehicle 3 .
  • the passive closure function PC is automatically performed by system 1 .
  • area A 5 does not cover the whole interior 5 of vehicle 2 .
  • Antenna 21 is arranged inside gearbox control device 12 , such that area A 5 covers the front compartment 7 of vehicle 2 . If device 30 is located in the trunk or on a rear seat 73 or 74 of vehicle 2 , its position P 30 outside area A 5 is estimated outside vehicle 2 .
  • device 30 When device 30 is a smartphone, most of the time user 3 seated on driver seat 41 puts device 30 on passenger seat 42 , in a side or central storage compartment, in his bag disposed on or in front of the passenger seat 42 , or keep it in his jacket pocket. When device 30 is a watch, user 3 keeps it fixed to his wrist. In other words, user 3 usually keeps device 30 close to him in front compartment 7 .
  • FIG. 2 shows system 1 when device 30 is located inside area A 6 , while openings 40 are closed.
  • the passive entry function PE is authorized, so that openings 40 can be unlocked.
  • Metal parts of body structure 4 forms a barrier for signals S 20 and S 30 , such that their intensity drops when crossing body structure 4 .
  • border B 20 has a shape of a sphere truncated by body structure 4 , more precisely by the roof and front doors 41 and 42 of vehicle 2 .
  • FIG. 3 shows system 1 when device 30 is located inside area A 6 , while driver door 41 is open. Border B 20 extends outside vehicle 2 , since signals S 20 and 30 are not attenuated by closed door 41 . Areas A 5 and A 6 are slightly modified. Antenna 21 is positioned and system 1 is configured such that area A 5 does not overly extends outside vehicle 2 .
  • FIG. 4 shows system 1 when device 30 is located inside area A 5 , on passenger seat 72 , while door 41 is closed.
  • the passive start function PS is authorized, so that engine 9 can be started.
  • device 30 Before control system 1 can be operated, device 30 must be recognized by vehicle 2 via NFC communication. When user 3 activates control system 1 for the first time, in order to access vehicle 3 via the passive entry function PE, device 30 initially provides an authentication key to vehicle 2 via said NFC communication.
  • unlocking vehicle 2 via function PE, locking vehicle 2 via function PC or starting vehicle 2 via function PS can be authorized via:
  • Bluetooth communication established between device 30 and antenna arrangement 20 , then a second communication (wired or wireless communication) established between antenna arrangement 20 and central unit 10 .
  • Communications within system 1 are performed by using Bluetooth LE. Contrary to NFC communication, user 3 doesn't need to take device 30 out of his pocket every time he has to activate function PE, PC or PS.
  • FIGS. 5 to 8 Other embodiments of the invention are represented on FIGS. 5 to 8 .
  • elements similar to the first embodiment have the same references and work in the same way. Only the differences with respect to the first embodiment are described hereafter.
  • FIG. 5 shows an antenna arrangement 20 including a first antenna 22 integrated to driver door 41 and a second antenna 23 integrated to passenger door 42 .
  • Antennas 22 and 23 are mounted next to an inner face of doors 41 and 42 , such that metal parts of said doors 41 and 42 are located between said antennas 22 and 23 and the exterior 6 of vehicle 2 .
  • Antenna arrangement 20 defines a signal intensity mapping M 20 , borders B 20 and B 21 , areas A 5 , A 6 and A 60 different from the first embodiment. Border B 21 , area A 6 and area A 60 are not shown for simplification purpose. Signal intensity mapping M 20 is defined depending on locations of antennas 22 and 23 . A same importance is given to each antenna 22 and 23 , so that area A 5 has a median plane of symmetry. As in the first embodiment, area A 5 does not cover the whole interior 5 of vehicle 2 , but covers the front compartment 7 of vehicle 2 .
  • Antenna 22 is defined as the main antenna, while antenna 23 is defined as the secondary antenna. Antenna 22 is designed to emit signal S 20 , while antenna 23 is not designed to emit signal S 20 . Antenna 22 can be can be configured to receive or not receive signal S 30 . Antenna 23 is designed to receive signal S 30 . After reception, signal S 30 is processed by system 1 to evaluate position P 30 of device 30 outside or inside vehicle 2 .
  • both antennas 22 and 23 are designed to receive signal S 30 .
  • signal S 30 has a distinct signal intensity 130 for each of the antennas 22 and 23 .
  • System 1 can be configured to activate antenna 22 to emit signal S 20 at a predetermined frequency (for example every one second), then to activate antenna 23 briefly, only after signal S 30 has been received by antenna 22 . Therefore, position P 30 of device 30 can be calculated by analyzing the distinct signal intensities 130 collected successively by the different antennas 22 and 23 . In other words, position P 30 of device 30 is evaluated by triangulation.
  • FIG. 6 shows an antenna arrangement 20 similar to FIG. 5 , except signal intensity mapping M 20 and signal intensity reference I 20 are shifted by giving a different importance to each antenna 22 and 23 . More precisely, a higher importance is given to antenna 22 integrated to driver door 41 .
  • Area A 5 is not symmetric but more extended around the driver seat 71 than the passenger seat 72 . As in the previous embodiments, area A 5 does not cover the whole interior 5 of vehicle 2 , but covers the front compartment 7 of vehicle.
  • FIG. 7 shows an antenna arrangement 20 similar to FIG. 5 , except antenna 22 is integrated to driver seat 71 and antenna 23 is integrated to passenger seat 72 .
  • area A 5 does not cover the whole interior 5 of vehicle 2 , but covers the front compartment 7 of vehicle 2 .
  • FIG. 8 shows an antenna arrangement 20 combining the embodiments of FIGS. 1 to 5 .
  • Antenna 21 is integrated to gearbox control device 21
  • antenna 22 is integrated to driver door 41
  • antenna 23 is integrated to passenger door 42 .
  • signal intensity mapping M 20 and signal intensity reference I 20 may be shifted by giving a higher importance to antenna 21
  • Antenna 21 is defined as the main antenna, while antennas 22 and 23 are defined as the secondary antennas. Antenna 21 is designed to emit signal S 20 , while antennas 22 and 23 are not designed to emit signal S 20 . Antenna 21 can be configured to receive or not receive signal S 30 . Antennas 22 and 23 are designed to receive signal S 30 . After reception, signal S 30 is processed by system 1 to evaluate position P 30 of device 30 outside or inside vehicle 2 .
  • all antennas 21 , 22 and 23 are designed to receive signal S 30 .
  • signal S 30 has a distinct signal intensity 130 for each of the antennas 21 , 22 and 23 .
  • System 1 can be configured to activate antenna 21 to emit signal S 20 at a predetermined frequency (for example every one second), then to activate antennas 22 and 23 briefly, only after signal S 30 has been received by antenna 21 . Therefore, position P 30 of device 30 can be calculated by analyzing the distinct signal intensities 130 collected successively by the different antennas 21 , 22 and 23 . In other words, position P 30 of device 30 is evaluated by triangulation.
  • antenna arrangement 20 can comprise more than three antennas
  • control system 1 and method can be adapted to the specific requirements of the application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
US16/096,334 2016-05-02 2016-05-02 Control system and method for a vehicle Abandoned US20190130682A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2016/000747 WO2017191480A1 (fr) 2016-05-02 2016-05-02 Système et procédé de commande pour un véhicule

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US (1) US20190130682A1 (fr)
EP (1) EP3446293A1 (fr)
CN (1) CN109074687B (fr)
BR (1) BR112018072413A2 (fr)
WO (1) WO2017191480A1 (fr)

Cited By (11)

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